2D-Fourier 1.3 2D Fourier calculates the two-dimensional Fourier transform of an image. Color images are first transferred to black/white. The Fourier image shows the amplitude of the complex kvectors along kx and ky axes. In “complex” setting the App shows the real and imaginary parts of k in red and blue, respectively. Selected regions of the Fourier image can brushed out, or selected spatial frequencies can be added, and the effect on the corresponding

Fourier Series 1.0 See how adding more and more terms, the Fourier series reproduces better and better a periodic function, for 4 different functions. See what is limiting the convergence. Valuable for teachers and students in the first approach to the study of the Fourier series.

FourierSeriesTrainer 1.1.1 Better learning guide of fourier series for you! -You can set fourier coefficients intuitively by slider. -You can see composed waveforms at hand. -Square errors for typical waveforms (square, triangle, and sawtooth) is displayed. -Game mode (time trial) is also available. This will be helpful for your learning fourier analysis!